2145318236 has 6 divisors (see below), whose sum is σ = 3754306920. Its totient is φ = 1072659116.

The previous prime is 2145318229. The next prime is 2145318269. The reversal of 2145318236 is 6328135412.

It is a junction number, because it is equal to n+sod(n) for n = 2145318196 and 2145318205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268164776 + ... + 268164783.

It is an arithmetic number, because the mean of its divisors is an integer number (625717820).

Almost surely, 2^2145318236 is an apocalyptic number.

It is an amenable number.

2145318236 is a deficient number, since it is larger than the sum of its proper divisors (1608988684).

2145318236 is a wasteful number, since it uses less digits than its factorization.

2145318236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536329563 (or 536329561 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 2145318236 is about 46317.5802044969. The cubic root of 2145318236 is about 1289.7253658895.

The spelling of 2145318236 in words is "two billion, one hundred forty-five million, three hundred eighteen thousand, two hundred thirty-six".